fix: Clone a new agent per session to isolate the session conversation from others

Gradio_UI.py

@@ -214,7 +214,7 @@ class GradioUI:
             raise ModuleNotFoundError(
                 "Please install 'gradio' extra to use the GradioUI: `pip install 'smolagents[gradio]'`"
             )
-        self.agent_cloner = AgentCloner(agent, model)
+        self.agent_cloner = AgentCloner(agent)
         self.file_upload_folder = file_upload_folder
         if self.file_upload_folder is not None:
             if not os.path.exists(file_upload_folder):